Study of seashell waste recycling in fireproofing material: technical, environmental, and economic assessment

2021 ◽  
pp. 148102
Author(s):  
B. Peceño ◽  
B. Alonso-Fariñas ◽  
L.F. Vilches ◽  
C. Leiva
Keyword(s):  
Economic Assessment ◽  
Waste Recycling

scholarly journals Prospects for the transition of the textile industry in the Russian to a closed-loop economy

2021 ◽  
Vol 14 (4) ◽  
pp. 418-424
Author(s):  
A. B. Dolgushin ◽  
A. A. Tsukanov ◽  
A. D. Petrov
Keyword(s):  
Textile Industry ◽  
Waste Treatment ◽  
Raw Materials ◽  
Economic Assessment ◽  
Waste Recycling ◽  
Closed Cycle ◽  
Textile Waste ◽  
Large Cities ◽  
Industrial Enterprises ◽  
Cycle Economy

The life of a modern person today cannot be imagined free from an urgent and urgent problem – the problem of waste recycling. At the same time, the environmental situation in large cities, including industrial enterprises, is mainly determined by the state of the waste treatment system. These include solid municipal waste, as experts call the garbage that is formed daily in everyday life and makes a long way from the garbage chute to the yard container and further to the city dump.At the moment, the infrastructure for collecting and processing secondary raw materials (glass, plastic, paper, batteries, etc.) is developing on the territory of many CIS countries, including Russia, while there are no reception points for textile waste of production and consumption in sufficient quantities, unlike in European countries. There are retail outlets that accept unnecessary textiles from the population, and in return provide discounts on their products. However, taking into account the volume of textile waste generation (about 4.2–4.8 million tons per year), the existing textile waste collection system, which collects only about 0.4% of textile waste, is clearly insufficient. Based on the identified problems, the authors of this article give a socio-ecological and economic assessment of the problem of handling textile waste of consumption in Russia. The analysis of the relationship of the problems of textile waste management to the UN Sustainable Development Goals is carried out. The international experience of applying the principles of the closed-cycle economy in relation to textile waste is considered and recommendations for the transition of the Russian textile industry to a closed-cycle economy are formed.

Framework for economic assessment of concrete waste management strategies

2018 ◽  
Vol 37 (3) ◽  
pp. 268-277 ◽  
Author(s):  
Nehal El-Shaboury ◽  
Manal Abdelhamid ◽  
Mohamed Marzouk
Keyword(s):  
Management Strategies ◽  
Economic Assessment ◽  
Developed Countries ◽  
Waste Recycling ◽  
Recycled Aggregate ◽  
Economic Viability ◽  
Viability Analysis ◽  
Construction And Demolition Wastes ◽  
Proposed Model

Unlike developing countries, most developed countries address the problem of construction and demolition wastes (CDW) accumulation. In Egypt, CDW recycling plants are minimal. This study is devoted to understanding the economic aspects of constructing and operating a construction and demolition concrete waste recycling plant in Egypt. This includes accounting for several factors such as location, design of the recycling plant, the equipment used, and the material entering and leaving the plant. This is followed by implementing a detailed economic viability analysis that assesses the savings resulted from recycling concrete waste to produce recycled aggregate. CDW recycling plants give rise to economic viability as they seem economically viable even in the absence of specific government policies. A comprehensive case study of an actual project in New Cairo City in Egypt is presented in order to demonstrate the process of CDW disposal and illustrate the practical features of the proposed model.

Environmental and Economic Assessment of a Portable E-Waste Recycling and Rare Earth Elements Recovery Process

2021 ◽  
Author(s):  
Emmanuel Ohene Opare ◽  
Amin Mirkouei
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Large Scale ◽  
Electronic Waste ◽  
Electronic Devices ◽  
Economic Assessment ◽  
Recovery Process ◽  
Waste Recycling ◽  
High Tech ◽  
Regulatory Bodies

Abstract Over 40 million tons of electronic devices (e.g., computers, laptops, notebooks, and cell phones) became obsolete in 2020, and this estimate is expected to grow exponentially, mainly due to the decreasing lifespan of electronics. Most of the electronics replaced end up in municipal landfills. Electronic waste (e-waste) has raised concerns because many components in these products are not biodegradable and are toxic. Some of the toxic materials and chemicals include rare earth elements (REEs), which are currently experiencing supply constraints. This study focuses on generated e-wastes from households due to the high amount of these wastes. Technologies for e-waste mining must be tailored to household needs rather than large-scale industrial processes. The use of portable e-waste recovery systems may produce win-win outcomes where industry, households, and regulatory bodies could benefit, and this will incentivize e-waste mining for all stakeholders. This study investigates the sustainability benefits of employing a portable e-waste recycling and REEs recovery, using techno-economic and life cycle assessment methods. The results indicate that the proposed approach in this study mitigates environmental impacts when maleic acid is used as one of the key ingredients in recovering and separating REEs and other metals. It is concluded that when adopted globally, this technology can significantly address the e-waste challenge while improving the availability of REEs for high-tech applications.

scholarly journals Gateway of Landfilled Plastic Waste Towards Circular Economy in Europe

Separations ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 25 ◽  
Author(s):  
Juris Burlakovs ◽  
Mait Kriipsalu ◽  
Dmitry Porshnov ◽  
Yahya Jani ◽  
Viesturs Ozols ◽  
...  
Keyword(s):  
Economic Assessment ◽  
Waste Recycling ◽  
Plastic Waste ◽  
Management Systems ◽  
Processing Waste ◽  
Economic Sectors ◽  
Contemporary World ◽  
Plastic Waste Recycling ◽  
Material Studies

For decades, significant work has been conducted regarding plastic waste by dealing with rejected materials in waste masses through their accumulation, sorting and recycling. Important political and technical challenges are involved, especially with respect to landfilled waste. Plastic is popular and, notwithstanding decrease policies, it will remain a material widely used in most economic sectors. However, questions of plastic waste recycling in the contemporary world cannot be solved without knowing the material, which can be achieved by careful sampling, analysis and quantification. Plastic is heterogeneous, but usually all plastic waste is jointly handled for recycling and incineration. Separation before processing waste through the analytical approach must be applied. Modern landfill mining and site clean-up projects in contemporary waste management systems require comprehensive material studies ranging from the macro-characterization of waste masses to a more detailed analysis of hazardous constituents and properties from an energy calorific standpoint—where, among other methods, thermogravimetric research coupled with life cycle assessment (LCA) and economic assessment is highly welcomed.

ECONOMIC ASSESSMENT OF PUBLIC HEALTH

2020 ◽  
Vol 14 (3) ◽  
Author(s):  
Natalia Afonina ◽  
Svetlana Goncharova
Keyword(s):  
Public Health ◽  
Economic Assessment

Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 17-24 ◽  
Author(s):  
HAKIM GHEZZAZ ◽  
LUC PELLETIER ◽  
PAUL R. STUART
Keyword(s):  
Cost Estimation ◽  
Process Model ◽  
Black Liquor ◽  
Pulp Mill ◽  
Value Added ◽  
Economic Assessment ◽  
Extraction Process ◽  
Estimation Methods ◽  
Precipitation Process

The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery options have been calculated using standard cost estimation methods. The results show that the two biorefinery options are profitable for the case study mill and effective at process debottlenecking. The after-tax internal rate of return (IRR) of the lignin precipitation process option was estimated to be 95%, while that of the hemicellulose pre-extraction process option was 28%. Sensitivity analysis showed that the after tax-IRR of the lignin precipitation process remains higher than that of the hemicellulose pre-extraction process option, for all changes in the selected sensitivity parameters. If we consider the after-tax IRR, as well as capital cost, as selection criteria, the results show that for the case study mill, the lignin precipitation process is more promising than the near-neutral hemicellulose pre-extraction process. However, the comparison between the two biorefinery options should include long-term evaluation criteria. The potential of high value-added products that could be produced from lignin in the case of the lignin precipitation process, or from ethanol and acetic acid in the case of the hemicellulose pre-extraction process, should also be considered in the selection of the most promising process option.

Sign in / Sign up

Export Citation Format

Share Document